Final answer:
Iron is the most likely mineral to be lacking in the diets of female team sports athletes due to increased iron needs and potential loss through sweat.
Step-by-step explanation:
The mineral that is most likely to be lacking in the diets of female team sports athletes is iron. Females require extra iron due to menstruation, and iron is necessary for the formation of hemoglobin, which carries oxygen in red blood cells. Since female athletes may lose iron through sweat and may have increased iron needs, it is important for them to ensure adequate iron intake through their diet.